Albert Barnes Commentary John 15:23

"He that hateth me hateth my Father also." — John 15:23 (ASV)

He that hateth me, etc. To show them that this was no slight crime, he reminds them that a rejection of himself is also a rejection of God. Such is the union between them, that no one can hate the one without also hating the other. See John 5:19-20; John 14:7, 9.